How can I create a hover effect in which the body background color changes when a user hovers over a link within a div? Below is the CSS code snippet:
body {
background-color: black;
}
a {
color: white;
text-decoration: none;
}
a:hover {
color: white;
background-color: transparent;
text-decoration: underline;
}
In order to achieve the desired effect, we need to implement a clever workaround as CSS does not support a parent selector.
One approach is to utilize a pseudo element within the a tag to create a background that covers the entire body:
a {
color: white;
text-decoration: none;
}
a:before {
content: "";
position: fixed;
top: 0;
right: 0;
left: 0;
bottom: 0;
background: #000;
z-index: -1;
pointer-events:none;
}
a:hover::before {
background: red;
}<a href="#">link</a>In brief: Achieving this purely with CSS is not currently possible, but...
Diving deeper:
There exists a pseudoclass called :has() that can target elements with specific attributes. In your scenario, it might look something like: body:has(div a:hover).
Unfortunately, this feature has limited support at present.
Nevertheless, there is an alternative solution using HTML <input> and <label> elements except for the inability to alter the background-color of the <body> element due to its auto-generated start tag by the browser even before other nested elements are written regardless of the placement in the code.
HTML:
<body>
<input id="magic" type="checkbox">
<div>
<label for="magic"><a href="#">Link</a></label>
</div>
</body>
CSS:
html, body, div {
margin: 0;
height: 100%;
}
#magic:hover + div {
background: red;
}
input {
position: fixed;
left: -100%;
}
While it may not be the most visually appealing solution, you have the option to utilize the :before pseudo-element on the body tag.
<a class="change-bg" href="">link 1</a>
CSS:
body {
background: #fff;
}
a.change-bg:hover:before {
content:'';
position: absolute;
display: block;
top: 0;
bottom: 0;
left: 0;
right: 0;
z-index: -1;
background-color: #000;
}
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